61404

神经网络昆斯林的新闻组分类2006

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From: [e-mail] (julie moses)
Subject: Re: temperature of the dark sky
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Date: Wed, 28 Apr 1993 18:52:06 GMT
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>> Does anyone have a reference (something I can look up, not just your own
>> recollections -- I have a few of those myself) on the temperature of the
>> (night) sky as seen from space?
>>
>> Note, I am *not* talking about the temperature of the Microwave Background
>> Radiation.  There are more things in the sky than just the MBR; what I'm
>> after is total blackbody temperature -- what a thermal radiator would see,
>> disregarding (or shielding against) the Sun and nearby large warm objects.
>
>
I'm not sure if this will help you, but the (local) interstellar
radiation field has been measured and modeled by various groups.  If I
remember things correctly, the models involved contributions from three
different BB sources, so there's no obvious "temperature" of background
radiation in our local area.  However, the following references give the
interstellar radiation density as a function of wavelength, and you can
integrate and average in an appropriate manner to get an "effective"
temperature if you like:

Witt and Johnson (1973) Astrophys. J. 181, 363 - 368
Henry et al. (1980) Astrophys. J. 239, 859 - 866
Mathis et al. (1983) Astron. Astrophys. 128, 212 - 229

As you can see, the references are out of date, but they might get you
started.

Hope this helps,

					Julie